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Significant Accounting Policies - Summary of Basis Depreciation of Property, Plant and Equipment (Detail) | 12 Months Ended
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Dec. 31, 2018
Building structures [member] |
Disclosure Of Property Plant And Equipment [Line Items] |
Method | Straight-line
Rate | 15 to 20 years
Furniture and equipment [member] |
Disclosure Of Property Plant And Equipment [Line Items] |
Method | Straight-line
Rate | 5 years
Computer equipment [member] |
Disclosure Of Property Plant And Equipment [Line Items] |
Method | Straight-line
Rate | 3 years
Security equipment [member] |
Disclosure Of Property Plant And Equipment [Line Items] |
Method | Straight-line
Rate | 5 years
Production equipment [member] |
Disclosure Of Property Plant And Equipment [Line Items] |
Method | Straight-line
Rate | 7 years
Road [member] |
Disclosure Of Property Plant And Equipment [Line Items] |
Method | Straight-line
Rate | 25 years
Leasehold improvements [member] |
Disclosure Of Property Plant And Equipment [Line Items] |
Method | Straight-line
Rate | 5 to 10 years
Equipment under finance lease [member] |
Disclosure Of Property Plant And Equipment [Line Items] |
Method | Straight-line
Rate | Lesser of term of lease and useful life of equipment

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- Definition The depreciation method used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_b&doctype=Standard -URIDate 2017-03-09 + Details
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Period Type: | duration

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The useful lives or depreciation rates used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_c&doctype=Standard -URIDate 2017-03-09 + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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- Details
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